Entering the UK

Upon arriving to London, the custom officer lady asked if I had ever been refused a visa to the UK. And why. And what was the flight number I flew by. I had no idea what was the answer to the last question. It turned out that the reason I was asked about my flight number was because it appears in their system that I had been refused a visa and they have to ask me all kinds of additional questions. Is it always going to be like this from now on? No. Only for a few more times and then it will disappear from the system that I was refused a visa. How comforting, huh? Anyway, I shouldn't complain, it didn't take too long. My colleague from Pakistan who we had met at the airport in Finland by chance and travelled together, spent 15 minutes answering questions...